Alisa Clausen on tue 7 jun 05
oxidation.
Glaze test for Clear Cone 6 Glaze, Burkett/Borcherding, cone 6, =
oxidization.
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c. (2228f)
Source: Clay Times, March/April, 2005
Credited to: Kate Borcherding and Richard Burkett
Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)=20
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 1100c (2012f)
Hold 1 hour
Shut off kiln
Recipe:
70 Frit 3195
8 EPK
10 Wollastonite
12 Silica
ADD
0.25 Epsom salts
2.0 Bentonite
Note: All raw materials are measured up or down to the nearest half =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.
Results:
Transparent, gloss glaze.
Variation
ADD
0.25 Copper carb.
Transparent, green gloss.
was suggested also to try=20
0.15 -0.10 mason stain #6371
or
0.25-0.50 mason stain # 6263
Regards from Alisa in Denmark
Ron Roy on thu 9 jun 05
oxidation.
This glaze has a fairly low expansion rate even though the boron content is
16.3 % - so it would be wise to test it for shivering and/or dunting -
because it will be a problem on some clay bodies.
RR
>Glaze test for Clear Cone 6 Glaze, Burkett/Borcherding, cone 6, oxidization.
>
>Glaze tested on white midrange stoneware fired in electric oxidation to
>1220c. (2228f)
>
>Source: Clay Times, March/April, 2005
>Credited to: Kate Borcherding and Richard Burkett
>
>Firing ramp:
>100c p/h to 600c (212f - 1112f)
>150c p/h to 1140c (302f - 2084f)
>80c p/h to 1220c (176f - 2228f)
>15 min. soak
>cool down max. to 1100c (2012f)
>Hold 1 hour
>Shut off kiln
>
>Recipe:
>70 Frit 3195
>8 EPK
>10 Wollastonite
>12 Silica
>
>ADD
>0.25 Epsom salts
>2.0 Bentonite
>
>Note: All raw materials are measured up or down to the nearest half decimal.
>Colorants or additives to a 100 gram test batch are measured in percent to
>the 100 gram test batch.
>
>Results:
>Transparent, gloss glaze.
>
>Variation
>ADD
>0.25 Copper carb.
>Transparent, green gloss.
>
>was suggested also to try
>0.15 -0.10 mason stain #6371
>or
>0.25-0.50 mason stain # 6263
>
>
>Regards from Alisa in Denmark
>
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Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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